HP PowerTrust A3589A, Manual

Page: 123 / 257

Chapter 6 6-7
Troubleshooting
Alarm Indicators
Caution LED is flashing, changing the position of the Service Bypass switch may interrupt
AC output to the load. Therefore,
do not
change the position of the Service Bypass switch
when the Caution LED is blinking unless there is no load or the load is not running.
The following table lists the possible reasons for caution LED to be blinking.
If the light is not blinking, it is safe to use the Service Bypass switch.
Precharge Failure LED
When flashing continuously, this red LED indicates that the voltage on the main inverter
has not precharged properly and that the Battery Precharge Shorting Plate must not be
installed.
Audible Alarm
The audible alarm is located inside the unit and is used in conjunction with the
Attention
light and the Silence Alarm/Test switch. A variety of conditions activate the audible alarm
as explained in the cases on the following pages. Refer to the cases for meaning, cause, and
possible actions.
The audible alarm has four different patterns of increasing urgency:
Isolated beep a single beep sounds each time the Silence Alarm/Test switch is
pushed. (See “Silence Alarm/Test” for more information.)
One-Beep alarm one beep every 10 seconds. This means the battery is supplying
power.
Three-Beep alarm three beeps every 10 seconds. The actions associated with this
alarm may include preparing for shut down of the protected
equipment. (The three-beep alarm takes precedence over a
one-beep alarm.)
Cause Action
The Output On/Output Off switch is set to
Output Off
. Set the switch to
Output On
.
The AC input voltage or frequency is outside the UPS
specifications. Resolve the AC line
problem.
The batteries are discharged. Charge the batteries (~14
hours).
The UPS was turned off by the operating system (OS). Have the OS turn the UPS
on.
The Electronics Unit is defective. Replace the Electronics
Unit.